05:09 PT - 1/20 - We just received Hannah's autopsy report from the Knox County Regional Forensic Center. According to the report ... Hannah's toxicological findings reveal that she had methamphetamine and fentanyl in her system at the time of her death.
Her boyfriend had left the house to buy methamphetamine, while Hannah had texted the same retailer and asked for "something" to help her. Hannah was found hanged by her boyfriend, with whom she had been involved in a "violent" relationship.
No note was found at the scene.
Chris Daughtry's daughter Hannah Price died of suicide by hanging while under the influence of drugs ... this according to her family.
TMZ broke the story ... Hannah was found dead in her home back in November, though the cause of death at the time was uncertain. The Daughtry family now says Hannah took her own life.
Deanna and Chris said Hannah struggled with mental illness and later turned to drugs and found herself in violent relationships, adding: "We did everything we could to support her and get her the help she needed to recover from these tragedies and get her life back on track. "
Law enforcement told us Hannah's boyfriend Bobby was arrested the same day her body was found ... at the time, police did not reveal the reason behind his arrest.
Chris and Deanna now say that the morning after her death, she contacted her parents for fear of her life ... claiming that her boyfriend had physically abused her. When the officers arrived, they concluded that she was well. After her death, Bobby was arrested for an unrelated affair.
Chris Daughtry said he was completely crushed and crushed, in an emotionally charged Instagram post ... and canceled his concert tour.
Chris and his wife Deanna met back in 2000 ... Deanna had two children - Hannah and her brother Griffin - from a previous relationship. Chris and Deanna later had twins Adalynn Rose and Noah James.
Hannah was 25.
Originally published - 19/1 16:19 PT